In a setback for the renewable energy movement, the state House in Oklahoma this week passed a bill that would levy a new fee on those who generate their own energy through solar equipment or wind turbines on their property. Still, it’s the new customers who will rapidly make up the majority, even in a traditional oil-and-gas powerhouse like Oklahoma. That’s because the cost of solar power systems has been drastically falling for the last five years. Now, utility firms in Oklahoma say they just want to be compensated for use of their infrastructure.